package com.base.widget.swipemenulistview;

import android.content.Context;
import android.support.v4.view.MotionEventCompat;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.Interpolator;
import android.widget.ListAdapter;
import android.widget.ListView;


/**
 * @author baoyz
 * @date 2014-8-18
 */
public class SwipeMenuListView extends ListView {

    private static final int TOUCH_STATE_NONE = 0;
    private static final int TOUCH_STATE_X = 1;
    private static final int TOUCH_STATE_Y = 2;

    private int MAX_Y = 5;
    private int MAX_X = 3;
    private float mDownX;
    private float mDownY;
    private int mTouchState;
    private int mTouchPosition;
    private SwipeMenuLayout mTouchView;
    private OnSwipeListener mOnSwipeListener;

    private SwipeMenuCreator mMenuCreator;
    private OnMenuItemClickListener mOnMenuItemClickListener;
    private Interpolator mCloseInterpolator;
    private Interpolator mOpenInterpolator;

    public SwipeMenuListView(Context context) {
        super(context);
        init();
    }

    public SwipeMenuListView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init();
    }

    public SwipeMenuListView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    private void init() {
        MAX_X = dp2px(MAX_X);
        MAX_Y = dp2px(MAX_Y);
        mTouchState = TOUCH_STATE_NONE;
    }

    /*
     * @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST); super.onMeasure(widthMeasureSpec, expandSpec); }
     */
    @Override
    public void setAdapter(ListAdapter adapter) {
        super.setAdapter(new SwipeMenuAdapter(getContext(), adapter) {

            @Override
            public void createMenu(SwipeMenu menu) {
                if (mMenuCreator != null) {
                    mMenuCreator.create(menu);
                }
            }

            @Override
            public void onItemClick(SwipeMenuView view, SwipeMenu menu, int index) {
                boolean flag = false;
                if (mOnMenuItemClickListener != null) {
                    flag = mOnMenuItemClickListener.onMenuItemClick(view.getPosition(), menu, index);
                }
                if (mTouchView != null && !flag) {
                    mTouchView.smoothCloseMenu();
                }
            }
        });
    }

    public void setCloseInterpolator(Interpolator interpolator) {
        mCloseInterpolator = interpolator;
    }

    public void setOpenInterpolator(Interpolator interpolator) {
        mOpenInterpolator = interpolator;
    }

    public Interpolator getOpenInterpolator() {
        return mOpenInterpolator;
    }

    public Interpolator getCloseInterpolator() {
        return mCloseInterpolator;
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        return super.onInterceptTouchEvent(ev);
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        if (ev.getAction() != MotionEvent.ACTION_DOWN && mTouchView == null)
            return super.onTouchEvent(ev);
        int action = MotionEventCompat.getActionMasked(ev);
        action = ev.getAction();
        switch (action) {
        case MotionEvent.ACTION_DOWN :
            int oldPos = mTouchPosition;
            mDownX = ev.getX();
            mDownY = ev.getY();
            mTouchState = TOUCH_STATE_NONE;

            mTouchPosition = pointToPosition((int) ev.getX(), (int) ev.getY());

            if (mTouchPosition == oldPos && mTouchView != null && mTouchView.isOpen()) {
                mTouchState = TOUCH_STATE_X;
                mTouchView.onSwipe(ev);
                return true;
            }

            View view = getChildAt(mTouchPosition - getFirstVisiblePosition());

            if (mTouchView != null && mTouchView.isOpen()) {
                mTouchView.smoothCloseMenu();
                mTouchView = null;
                return super.onTouchEvent(ev);
            }
            if (view instanceof SwipeMenuLayout) {
                mTouchView = (SwipeMenuLayout) view;
            }
            if (mTouchView != null) {
                mTouchView.onSwipe(ev);
            }
            break;
        case MotionEvent.ACTION_MOVE :
            float dy = Math.abs((ev.getY() - mDownY));
            float dx = Math.abs((ev.getX() - mDownX));
            if (mTouchState == TOUCH_STATE_X) {
                if (mTouchView != null) {
                    mTouchView.onSwipe(ev);
                }
                getSelector().setState(new int[] { 0 });
                ev.setAction(MotionEvent.ACTION_CANCEL);
                super.onTouchEvent(ev);
                return true;
            } else if (mTouchState == TOUCH_STATE_NONE) {
                if (Math.abs(dy) > MAX_Y) {
                    mTouchState = TOUCH_STATE_Y;
                } else if (dx > MAX_X) {
                    mTouchState = TOUCH_STATE_X;
                    if (mOnSwipeListener != null) {
                        mOnSwipeListener.onSwipeStart(mTouchPosition);
                    }
                }
            }
            break;
        case MotionEvent.ACTION_UP :
            if (mTouchState == TOUCH_STATE_X) {
                if (mTouchView != null) {
                    mTouchView.onSwipe(ev);
                    if (!mTouchView.isOpen()) {
                        mTouchPosition = -1;
                        mTouchView = null;
                    }
                }
                if (mOnSwipeListener != null) {
                    mOnSwipeListener.onSwipeEnd(mTouchPosition);
                }
                ev.setAction(MotionEvent.ACTION_CANCEL);
                super.onTouchEvent(ev);
                return true;
            }
            break;
        }
        return super.onTouchEvent(ev);
    }

    public void smoothOpenMenu(int position) {
        if (position >= getFirstVisiblePosition() && position <= getLastVisiblePosition()) {
            View view = getChildAt(position - getFirstVisiblePosition());
            if (view instanceof SwipeMenuLayout) {
                mTouchPosition = position;
                if (mTouchView != null && mTouchView.isOpen()) {
                    mTouchView.smoothCloseMenu();
                }
                mTouchView = (SwipeMenuLayout) view;
                mTouchView.smoothOpenMenu();
            }
        }
    }

    private int dp2px(int dp) {
        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, getContext().getResources()
                .getDisplayMetrics());
    }

    public void setMenuCreator(SwipeMenuCreator menuCreator) {
        this.mMenuCreator = menuCreator;
    }

    public void setOnMenuItemClickListener(OnMenuItemClickListener onMenuItemClickListener) {
        this.mOnMenuItemClickListener = onMenuItemClickListener;
    }

    public void setOnSwipeListener(OnSwipeListener onSwipeListener) {
        this.mOnSwipeListener = onSwipeListener;
    }

    public static interface OnMenuItemClickListener {

        boolean onMenuItemClick(int position, SwipeMenu menu, int index);
    }

    public static interface OnSwipeListener {

        void onSwipeStart(int position);

        void onSwipeEnd(int position);
    }
}
